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The Colnago G4-X is a high-performance carbon gravel bike designed for versatility and stability across varied terrain with 45mm tyre clearance.
The Colnago G4-X is a high-performance carbon gravel bike designed for versatility and stability across varied terrain with 45mm tyre clearance.
Colnago

Colnago G4-X Carbon Gravel Complete Bike Shimano 825 2x12 in Blue

£5,999.00
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Colnago G4-X Carbon Gravel Complete Bike Shimano 825 2x12 in Blue

Season:2025

Brand:Colnago

Code:COL.CB.25.G4X.2XICBL

The Colnago G4-X is a high-performance carbon gravel bike designed for versatility and stability across varied terrain.

The G4-X can fit tyres with a maximum nominal width of 45mm, providing ample clearance for off-road adventures. For longer rides, the frame is equipped with four mounting points for bottle cages or small bags, ensuring you can carry all necessary equipment. The bike features a standard T47 bottom bracket and a new seatpost lock designed to withstand higher tightening torque, guaranteeing stability and safety during intense off-road riding.

Features:

  • Colnago G4-X carbon frame and fork
  • Shimano RX-825 Di2 2x12-speed electronic groupset
  • Vision SC40 i23 carbon wheels with 12mm thru-axles
  • Pirelli Cinturato 700-40c tyres
  • Deda Superzero Gravel alloy handlebar and Colnago RS10 alloy stem
  • Shimano FC-RX825-2 48-31T crankset with 11-36T cassette
  • Shimano BR-RX825 hydraulic disc brakes with RT-M800 rotors
  • Colnago carbon seatpost and Selle Italia Model X BB FEC saddle
  • Acros SS headset bearings (42 x 52 x 7mm - 40 x 52 x 7mm)
Technical Information
  • Series
    G Series
  • Model
    Colnago G4-X
  • Frame (material)
    Monocoque carbon.
  • Fork (material, section notes)
    Carbon fork for disc brakes, external cables, section with round circumference
  • Headset bearings
    ACROS ss 42x52x7mm - 40x52x7mm
  • Seatpost
    Carbon seatpost, 0.15 offset, "D-Shape" section
  • Through axles
    Diameter: 12 mm. length 100 mm (front) - 142 mm (rear)
  • Shifting system
    Sram RED 1x13 XPLR AXS
  • Front derailleur
    This goupset has a single chainring
  • Rear derailleur
    Sram RED XPLR eTap AXS - RD-RED-1E-E1
  • Chain
    RED Chain - CN-RED-E1
  • Chainrings
    40T
  • Cassette
    10-46T 13s
  • Bottom bracket
    T47 Sram DUB Road
  • Crank length
    Sizes 450 - 480: 170 mm; Sizes 520 - 570: 172.5 mm
  • Brakes
    Disc brakes SRAM Red eTap AXS HRD SHIFT-BRAKE SYSTEM - CenterLine XR Rotor
  • Disc size
    160 mm Front/ 160 mm Rear
  • Brake lever
    SRAM Red eTap AXS HRD SHIFT-BRAKE SYSTEM
  • Brake caliper
    SRAM Red eTap AXS HRD SHIFT-BRAKE SYSTEM
  • Wheels
    Vision SC 45 Disc
  • Material
    Carbon – with hooks
  • Rim height
    45mm
  • Internal channel width
    21 mm
  • Hubs
    Hubs with direct pull spokes
  • Tyres
    Pirelli Cinturato Gravel 40 TLR
  • Maximum tyre size
    42 mm (nominal width)
  • Saddle
    NOVUS BOOST EVO Superflow FeC; "Selle Italia" Model X BB FEC
  • Handlebar
    CC.01 Wide integrated cockpit; Sizes 450: Width: 400 mm; Sizes 480 -540: Width: 420 mm; Sizes 570: Width: 440 mm
  • Stem
    Integrated cockpit (CC.01 Wide); Size 450 - 480: Length: 90 mm; Sizes 520- 570: Length: 100 mm
  • Handlebar Tape
    Colnago Grip Black
  • Bottle cage
    Colnago Matt Black (1x)
  • Shifting system
    Sram Force XPLR AXS Disc
  • Front derailleur
    (This groupset has a single chainring)
  • Rear derailleur
    Sram Force 13s: RD-FRC-1E-E1
  • Crankset
    Sram Force: 40T
  • Cassette
    Sram Force: 10-46 (13s) - CS-XG-1371-E1
  • Brakes
    Disc brakes SRAM Force - CenterLine XR Rotor
  • Brake lever
    SRAM Force AXS HRD Shift-Brake System - ED-FRC-E1
  • Brake caliper
    SRAM Force eTap AXS HRD SHIFT-BRAKE SYSTEM
  • Shifting system
    Shimano GRX 825 Di2 2x (electronical shifting)
  • Front derailleur
    Shimano GRX 2x: Shimano FD-RX820
  • Rear derailleur
    Shimano GRX 2x: Shimano RD-RX820
  • Chain
    Shimano GRX: Shimano CN-M8100 12V
  • Crankset
    Shimano GRX 2x: 48-31T
  • Cassette
    Shimano GRX 2x: 11-36 12v
  • Bottom bracket
    ACROS T47
  • Brakes
    Shimano RX-820, 160 mm Front / 160 mm Rear, RT-MT800-S rotors
  • Brake lever
    Shimano ST-RX820
  • Brake caliper
    Shimano RX-820
  • Shifting system
    Shimano GRX 822 1x
  • Rear derailleur
    Shimano GRX 1x: Shimano RD-RX822-SGS
  • Crankset
    Shimano GRX 1x: 42T
  • Cassette
    Shimano GRX 1x: 10-51 12v
  • Wheels
    Fulcrum Lite ER (for clincher and tubeless ready)
  • Material
    Rims: aluminium, Spokes: stainless steel.
  • Rim height
    Front: 24 mm; Rear: 24 mm
  • Internal channel width
    23 mm
  • Hubs
    Aluminium, Sealed Cartridge Bearings
  • Shifting system
    Shimano GRX 820 2x
  • Stem
    Deda ZERO1; Size 46s: Length: 90 mm; Size 49s: Length: 100 mm; Sizes 52s - 55s: Length: 110 mm; Sizes 58s: Length: 120 mm
  • Handlebar
    Deda Gravel 100; Sizes 46s: Width: 400 mm; Sizes 49s - 55s: Width: 420 mm; Sizes 58s: Width: 440 mm
  • Reach
    371 mm
  • Stack
    535 mm
  • O
    524 mm
  • Fork
    406 mm
  • Ss
    71°
  • Sc
    74°
  • C
    430 mm
  • A
    585 mm
  • BB drop
    72 mm
  • Default crank length
    170 mm
  • Default stem length (Colnago SR10)
    90 mm
  • Default handlebars width (Deda Superzero)
    400 mm (C-C)
  • Default cockpit size (CC.01 Wide)
    90mm - 400/460 mm (C-C)
  • Reach
    380 mm
  • Stack
    554 mm
  • O
    539 mm
  • Ss
    71.5°
  • A
    596 mm
  • Reach
    390 mm
  • Stack
    573 mm
  • O
    560 mm
  • Sc
    73.5°
  • A
    613 mm
  • BB drop
    70 mm
  • Default stem length (Colnago SR10)
    100 mm
  • Default handlebars width (Deda Superzero)
    420 mm (C-C)
  • Default cockpit size (CC.01 Wide)
    100mm - 400/460 mm (C-C)
  • Reach
    400 mm
  • Stack
    591 mm
  • O
    581 mm
  • Sc
    73°
  • A
    628 mm
  • Default stem length (Colnago SR10)
    110 mm
  • Default cockpit size (CC.01 Wide)
    110mm - 400/460 mm (C-C)
  • Reach
    410 mm
  • Stack
    600 mm
  • O
    596 mm
  • A
    644 mm
Sizing Information
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